Mark Catesby, ‘The Grey Fox Squirrel (Sciurus cinereus)’, published 1731-1743, National Gallery of Art, Washington, D.C.
plate: 25.2 x 34.9 cm (9 15/16 x 13 3/4 in.)  sheet: 31.9 x 45.1 cm (12 9/16 x 17 3/4 in.)

About Mark Catesby